.spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    /* 使容器居中 */
    width: 90px;
    /* 设置宽度 */
    height: 90px;
    /* 设置高度 */
}

.ball-scale-multiple {
    position: relative;
    width: 90px;
    /* 设置容器的宽度 */
    height: 90px;
    /* 设置容器的高度 */
    display: flex;
    justify-content: center;
    /* 使球体水平居中 */
    align-items: center;
    /* 使球体垂直居中 */
}

.ball-scale-multiple>div {
    background-color: #ffffff;
    border-radius: 100%;
    position: absolute;
    width: 90px;
    /* 每个小球的宽高 */
    height: 90px;
    opacity: 0;
    animation: ball-scale-multiple 1s infinite;
}

.ball-scale-multiple>div:nth-child(2) {
    animation-delay: -0.4s;
}

.ball-scale-multiple>div:nth-child(3) {
    animation-delay: -0.2s;
}

@keyframes ball-scale-multiple {
    0% {
        transform: scale(0);
        opacity: 0;
    }

    5% {
        opacity: 1;
    }

    100% {
        transform: scale(1);
        opacity: 0;
    }
}